发明名称 |
Method and apparatus for recording digital information in two-dimensional pattern, carrier of digital information recorded thereby, and a method and apparatus for decoding such digital information |
摘要 |
A digital information recording carrier has a planar recording surface having an information recording area in which cells corresponding to bits are virtually set in a matrix form, each cell being provided with an optically recognizable mark corresponding to digital information so that the digital information is recorded in the information recording area as a two-dimensional pattern. The carrier also has specific patterns each consisting of a plurality of cells which are linked together and which are given marks in a given pattern. Some of the specific patterns are placed in an inner portion apart from a perimeter of the information recording area.
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申请公布号 |
US6729542(B2) |
申请公布日期 |
2004.05.04 |
申请号 |
US20010927867 |
申请日期 |
2001.08.10 |
申请人 |
SHARP KABUSHIKI KAISHA |
发明人 |
IWAI TOSHIYUKI;AOKI ATSUSHI;ESASHI MASAHIRO;NIWAMOTO HIROAKI;YAMAGUCHI NORIMASA;KAMINOKADO TSUKASA |
分类号 |
G06K1/12;G06K7/00;G06K7/14;G06K19/06;(IPC1-7):G06K7/10 |
主分类号 |
G06K1/12 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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